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Add 72/20 and 18/24

1st number: 3 12/20, 2nd number: 18/24

72/20 + 18/24 is 87/20.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 24 is 120

    Next, find the equivalent fraction of both fractional numbers with denominator 120
  2. For the 1st fraction, since 20 × 6 = 120,
    72/20 = 72 × 6/20 × 6 = 432/120
  3. Likewise, for the 2nd fraction, since 24 × 5 = 120,
    18/24 = 18 × 5/24 × 5 = 90/120
  4. Add the two like fractions:
    432/120 + 90/120 = 432 + 90/120 = 522/120
  5. 522/120 simplified gives 87/20
  6. So, 72/20 + 18/24 = 87/20
    In mixed form: 47/20

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